Academy of Career Training Physics Energy and Momentum Dynamics Questions

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Academy of Career Training

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Could you please answer all the scenarios from question 1, 2 , 3 and 4.Answer all the questions please.

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SCENARIO 1: A large heavy truck travelling [E] collides with a motorcycle travelling [N]. The truck driver hits the brakes to avoid the collision, but she still hits the motorcycle from the side. (Nobody was hurt in this scenario!) The truck driver is wearing a seatbelt. The motorcycle rider is wearing a helmet. [Insert your answer here] SCENARIO 2: You ride an amusement park ride that looks like this; the blob in the diagram represents you spinning around: You start hanging straight down and as the ride starts to rotate faster and faster you “fly” out. [Insert your answer here] SCENARIO 3: You work in a scrap metal yard. You turn on the picker-upper, pick up a large metal car, lift it up, turn away then release/drop the car. [Insert your answer here] SCENARIO 4: You are standing on a bus that is heading [S] and travelling at a constant speed down a steep hill. You decide that you want to get off from the back door, start walking [N] on the bus while pulling your suitcase (on wheels) behind you. You ring the bell to let the driver know you want the next stop. [Insert your answer here]
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Explanation & Answer

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SCENARIO 1

1. The truck hits the motorcycle even though the brakes are applied; this is due to the
concept of inertia. Inertia resists the change in the motion of the truck when brakes are
applied.
2. Momentum transfer from the truck to the motorcycle- transfer of momentum and thus
conservation of momentum.
3. Newton’s 3rd law is applicable here - The motorcycle crashing is the equivalent opposite
reaction of the force applied by the truck.
4. The ...


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